Voltage control method and device for cluster in power distribution network and computer equipment

Abstract

The invention relates to a voltage control method and device for clusters in a power distribution network and computer equipment. The control terminal is applied to a target cluster in a plurality of clusters of the power distribution network; the method comprises the following steps: acquiring target voltage information of a target cluster and voltage information of clusters except the target cluster; according to difference information between the voltage information and target voltage information, target voltage difference information of the power distribution network is detected; generating voltage control information of the target cluster according to the target voltage difference information and the target voltage information; the voltage control information is issued to an edge controller of the target cluster, and the edge controller is used for controlling the internal voltage of the target cluster according to the voltage control information. In addition, the invention also provides a voltage control method and device for clusters in the power distribution network, computer equipment and a storage medium, which are applied to an edge controller in a target cluster in a plurality of clusters of the power distribution network. By adopting the method, the cluster voltage in the power distribution network can be efficiently controlled.

Description

Technical Field

[0001] The present application relates to the field of smart grid technology, and in particular to a voltage control method, device and computer equipment for a cluster in a distribution network. Background Art

[0002] With the widespread access to large-scale distributed renewable energy generation such as solar and wind power, the distribution network faces the severe challenge of voltage over-limit. Therefore, it is particularly important to control the voltage of each cluster in the distribution network.

[0003] In traditional technologies, methods for controlling the voltage of each cluster in a distribution network include but are not limited to: constructing a voltage control model of the cluster in the distribution network, then obtaining a variety of accurate operating parameters in the distribution network, processing the various operating parameters in the distribution network through the voltage control model of the cluster in the distribution network, obtaining voltage control information of the cluster in the distribution network, and controlling the voltage of each cluster in the distribution network based on the voltage control information of the cluster in the distribution network.

[0004] However, the current voltage control method of clusters in distribution networks is not efficient enough. Summary of the invention

[0005] Based on this, it is necessary to provide an efficient voltage control method, device, computer equipment, computer readable storage medium and computer program product for clusters in a distribution network in order to solve the above technical problems.

[0006] In a first aspect, the present application provides a voltage control method for a cluster in a distribution network, which is applied to a control terminal of a target cluster among multiple clusters in the distribution network; the method comprises:

[0007] Obtain target voltage information of the target cluster and voltage information of clusters other than the target cluster;

[0008] Detecting target voltage difference information of the distribution network according to difference information between the voltage information and the target voltage information;

[0009] generating voltage control information of the target cluster according to the target voltage difference information and the target voltage information;

[0010] The voltage control information is sent to the edge controller of the target cluster, wherein the edge controller is used to control the internal voltage of the target cluster according to the voltage control information.

[0011] In one embodiment, detecting target voltage difference information of the power distribution network according to difference information between the voltage information and the target voltage information includes:

[0012] Acquire voltage information of at least one cluster that has a communication connection with the target cluster from voltage information of clusters other than the target cluster;

[0013] Detecting difference information between voltage information of at least one cluster that is in communication connection with the target cluster and target voltage information;

[0014] According to the at least one difference information, target voltage difference information of the power distribution network is detected.

[0015] In one embodiment, generating voltage control information of a target cluster according to the target voltage difference information and the target voltage information includes:

[0016] According to the target voltage difference information and the target voltage information, the global voltage prediction information of the distribution network is detected, and the rated voltage information of the distribution network is obtained;

[0017] The voltage control information of the target cluster is generated according to the global voltage prediction information and the rated voltage information.

[0018] In a second aspect, the present application further provides a voltage control device for a cluster in a distribution network, which is applied to a control terminal of a target cluster among multiple clusters in the distribution network; the device comprises:

[0019] A first information acquisition module, used to acquire target voltage information of a target cluster and voltage information of clusters other than the target cluster;

[0020] A voltage difference detection module, used for detecting target voltage difference information of the distribution network according to difference information between the plurality of voltage information and the target voltage information;

[0021] A control information generation module, used to generate voltage control information of a target cluster according to the target voltage difference information and the target voltage information;

[0022] The first voltage control module is used to send voltage control information to the edge controller of the target cluster, wherein the edge controller is used to control the internal voltage of the target cluster according to the voltage control information.

[0023] In a third aspect, the present application provides a voltage control method for a cluster in a distribution network, which is applied to an edge controller inside a target cluster among multiple clusters in the distribution network, where the target cluster includes multiple cluster sub-units; the method includes:

[0024] In the case of receiving the voltage control information sent by the control terminal of the target cluster, the current operating voltage information of the multiple cluster sub-units and the initial voltage impact information at the previous moment are obtained. The voltage control information is generated by the control terminal of the target cluster after collecting the voltage information of the target cluster. The process of the control terminal of the target cluster generating the voltage control information includes: obtaining the target voltage information of the target cluster and the voltage information of the clusters other than the target cluster, detecting the target voltage difference information of the distribution network according to the difference information between the voltage information and the target voltage information, and generating the voltage control information of the target cluster according to the target voltage difference information and the target voltage information;

[0025] For each cluster sub-unit, the initial voltage impact information is corrected according to the voltage control information and the current operating voltage information to obtain the voltage impact information of the cluster sub-unit at the current moment;

[0026] The voltage of the target cluster is controlled according to the voltage influence information of all cluster sub-units.

[0027] In one embodiment, the initial voltage impact information is corrected according to the voltage control information and the current operating voltage information, including:

[0028] Extracting target cluster voltage information from voltage control information;

[0029] The initial voltage impact information is corrected according to the voltage difference information between the target cluster voltage information and the current operating voltage information.

[0030] In one embodiment, the initial voltage impact information is corrected according to the voltage difference information between the target cluster voltage information and the current operating voltage information, including:

[0031] Obtain voltage difference information between target cluster voltage information and current operating voltage information, as well as initial impact weight information of the voltage difference information;

[0032] Based on the initial voltage impact information and the current operating voltage information, the initial impact weight information is corrected to obtain the impact weight information at the current moment;

[0033] According to the influence weight information, the voltage difference information is corrected to obtain the voltage influence information change amount;

[0034] The initial voltage impact information is corrected according to the change amount of the voltage impact information.

[0035] In one of the embodiments, upon receiving the voltage control information sent by the control terminal of the target cluster, obtaining the initial voltage impact information of the target cluster at the previous moment further includes:

[0036] When receiving voltage control information sent by a control terminal of a target cluster, obtaining a cluster type of the target cluster;

[0037] According to the cluster type, the initial voltage impact information of the target cluster at the previous moment is detected. When the cluster type is an AC cluster, the initial voltage impact information is reactive output information; when the cluster type is a DC cluster, the initial voltage impact information is droop voltage information.

[0038] In a fourth aspect, the present application further provides a voltage control device for a cluster in a distribution network, which is applied to an edge controller inside a target cluster among multiple clusters in the distribution network, wherein the target cluster includes multiple cluster sub-units; the device includes:

[0039] The second information acquisition module is used to obtain the current operating voltage information of multiple cluster sub-units and the initial voltage impact information at the previous moment when receiving the voltage control information sent by the control terminal of the target cluster. The voltage control information is generated by the control terminal of the target cluster after collecting the voltage information of the target cluster. The process of the control terminal of the target cluster generating the voltage control information includes: obtaining the target voltage information of the target cluster and the voltage information of clusters other than the target cluster, detecting the target voltage difference information of the distribution network according to the difference information between the voltage information and the target voltage information, and generating the voltage control information of the target cluster according to the target voltage difference information and the target voltage information;

[0040] A voltage impact information correction module is used to correct the initial voltage impact information for each cluster sub-unit according to the voltage control information and the current operating voltage information to obtain the voltage impact information of the cluster sub-unit at the current moment;

[0041] The second voltage control module is used to control the voltage of the target cluster according to the voltage influence information of all cluster sub-units.

[0042] In a fifth aspect, the present application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the above steps are implemented when the processor executes the computer program.

[0043] In a sixth aspect, the present application also provides a computer-readable storage medium on which a computer program is stored, and the above steps are implemented when the computer program is executed by a processor.

[0044] In a seventh aspect, the present application also provides a computer program product, including a computer program, which implements the above steps when executed by a processor.

[0045] The voltage control method, device, computer equipment, computer-readable storage medium and computer program product of the cluster in the distribution network are applied to the control terminal of the target cluster among the multiple clusters in the distribution network; the control terminal of the target cluster among the multiple clusters in the distribution network detects the target voltage difference information of the distribution network through the difference information between the multiple voltage information of the clusters other than the target cluster and the target voltage information of the target cluster, and generates the voltage control information of the target cluster by combining the target voltage difference information with the target voltage information of the target cluster itself, and then sends the voltage control information to the edge controller of the target cluster, and the edge controller is used to control the internal voltage of the target cluster according to the voltage control information. In the whole process, there is no need to obtain the precise multiple different operating parameters in the distribution network in advance, nor to build a complex processing model, but to rely on the difference information between the target voltage information of the target cluster and the voltage information of other clusters to generate the voltage control information of the target cluster and send it to the edge controller of the target cluster, which greatly simplifies the process of controlling the voltage of the target cluster in the distribution network, thereby improving the efficiency of the voltage control of the cluster in the distribution network.

[0046] The voltage control method, device, computer equipment, computer-readable storage medium and computer program product of a cluster in a distribution network are applied to an edge controller inside a target cluster among multiple clusters in a distribution network, and the target cluster includes multiple cluster sub-units. The parameters involved in the whole process are very simple, mainly including the initial voltage impact information of the target cluster at the previous moment, the current operating voltage information of multiple cluster sub-units, and the interaction of voltage control information between the edge controller and the control terminal inside the target cluster. There is no need to obtain accurate multiple different operating parameters in the distribution network in advance, nor is there a need to build a complex processing model. The initial voltage impact information can be corrected according to the voltage control information and the current operating voltage information of the cluster sub-unit to obtain the voltage impact information of the cluster sub-unit at the current moment, and the voltage of the multiple cluster sub-units in the target cluster can be controlled separately according to the voltage impact information of all cluster sub-units, which greatly simplifies the complexity of the voltage control process for the multiple cluster sub-units in the target cluster, thereby improving the efficiency of voltage control of the cluster in the distribution network. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments of the present application or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1An application environment diagram of a voltage control method for a cluster in a distribution network in one embodiment;

[0049] Figure 2 It is a flowchart of a voltage control method of a cluster in a distribution network in one embodiment;

[0050] Figure 3 It is a flow chart of a voltage control method of a cluster in a distribution network in another embodiment;

[0051] Figure 4 A voltage variation curve of an AC cluster and a DC cluster before and after using a voltage control method for clusters in a distribution network in an embodiment;

[0052] Figure 5 is a system voltage curve of a cluster after a load disturbance in one embodiment;

[0053] Figure 6 It is a structural principle block diagram of voltage control of a cluster in a distribution network in one embodiment;

[0054] Figure 7 is a structural block diagram of a voltage control device of a cluster in a distribution network in one embodiment;

[0055] Figure 8 It is a structural block diagram of a voltage control device of a cluster in a distribution network in another embodiment;

[0056] Fig. 9 is an internal structure diagram of a computer device in one embodiment;

[0057] Fig.10 FIG. 4 is a diagram showing the internal structure of a computer device in another embodiment. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are used to explain the present application and are not used to limit the present application.

[0059] The voltage control method of a cluster in a distribution network provided in the embodiment of the present application can be applied to Figure 1In the application environment shown. The distribution network 102 includes multiple clusters 104, such as cluster 1, cluster 2, cluster 3, ..., cluster N in the figure, each cluster 104 has a corresponding control terminal 106, such as control terminal 1 corresponding to cluster 1, control terminal 2 corresponding to cluster 2, control terminal 3 corresponding to cluster 3, ..., control terminal A corresponding to cluster N in the figure, and each cluster 104 includes multiple cluster subunits 108, such as cluster subunit 1 corresponding to cluster 1, cluster subunit 2, cluster subunit 3, ..., cluster subunit M in the figure. The edge controller 110 in each cluster 104 communicates with the control terminal 106 corresponding to the cluster 104, and the edge controller 110 in each cluster 104 includes edge controller 1 of cluster subunit 1, edge controller 2 of cluster subunit 2, edge controller 3 of cluster subunit 3, ..., edge controller B of cluster subunit M in the figure.

[0060] Taking cluster 1 as the target cluster, the control terminal 106 of cluster 1 obtains the target voltage information of cluster 1 and the voltage information of clusters other than cluster 1; detects the target voltage difference information of the distribution network 102 based on the difference information between the voltage information and the target voltage information; generates the voltage control information of the target cluster based on the target voltage difference information and the target voltage information; and sends the voltage control information to the edge controller 110 of cluster 1.

[0061] When receiving the voltage control information sent by the control terminal 106 of cluster 1, the edge controller 110 of cluster 1 obtains the initial voltage impact information of cluster 1 at the previous moment and the current operating voltage information of multiple cluster sub-units 108; for each cluster sub-unit 108 of cluster 1, the initial voltage impact information is corrected according to the voltage control information and the current operating voltage information of the cluster sub-unit 108 to obtain the voltage impact information of the cluster sub-unit 108 at the current moment; according to the voltage impact information of all cluster sub-units 108, the voltages of multiple cluster sub-units 108 in cluster 1 are controlled separately.

[0062] The control terminal 106 of each cluster 104 may be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, IoT devices, and portable wearable devices. IoT devices may be smart speakers, smart TVs, smart air conditioners, smart vehicle-mounted devices, projection devices, etc. Portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. Head-mounted devices may be virtual reality (VR) devices, augmented reality (AR) devices, smart glasses, etc.

[0063] In an exemplary embodiment, Figure 2As shown, a voltage control method for a cluster in a distribution network is provided, and the method is applied to Figure 1 The control terminal 106 of the target cluster in is used as an example for explanation.

[0064] S100 , obtaining target voltage information of a target cluster and voltage information of clusters other than the target cluster.

[0065] Among them, the control terminal of each cluster plays a vital role in the distribution network. As the center of the system, it is responsible for comprehensively collecting real-time information from other clusters. This information is centrally processed and analyzed by the control terminals of each cluster and converted into precise control instructions. Compared with traditional centralized control, distributed control only needs to exchange neighbor node information. The design without a central controller reduces the impact of single-point communication failure and has a wide range of application scenarios. The principle of distributed control networking is to distribute the decision-making ability to multiple nodes in the network to ensure that each node has certain control capabilities and intelligence. When constructing a distributed communication network, it is necessary to ensure that each node in the network can be stably interconnected and realize real-time information transmission and collaborative work through an effective communication protocol. At the same time, the scalability, high availability, real-time and security of the network must also be considered to support complex and changing communication needs.

[0066] A cluster usually refers to a collection of nodes and lines between nodes that are closely connected electrically and have complementary active power. These nodes may include distributed power sources (such as photovoltaics, wind power, etc.), load nodes, source-load common nodes, etc. The formation of a cluster helps to decompose a complex distribution network into multiple relatively independent management units, thereby simplifying control complexity and improving control efficiency.

[0067] Specifically, the control terminal of each cluster collects voltage information of the corresponding cluster. The collected voltage information refers to the voltage signal at the outlet side of the cluster. The voltage signal can be an analog signal or a digital signal.

[0068] For the control terminal of the target cluster among multiple clusters, its control terminal can collect the voltage signal on the export side of the target cluster. In addition, it should be noted that in the inter-cluster distributed control of the present application, when the communication topology structure contains at least one spanning tree, the control terminal of any cluster (such as a distributed power generation unit cluster, a load node or a voltage control area) can exchange information with the control terminal of any other cluster in the system in a direct or indirect manner. Therefore, the control terminal of the target cluster can also collect voltage information of clusters other than the target cluster. This complete communication connectivity is one of the key conditions to ensure the stability and optimization convergence of the overall distributed control system.

[0069] In an exemplary embodiment, when the voltage signal is an analog signal, each distributed node in the distributed system converts the collected continuous voltage, current and other physical quantities on the cluster outlet side into corresponding analog electrical signals through sensors and other measuring devices. These analog signals are transmitted to the control terminal corresponding to the cluster through media such as wires and cables. In the distributed control terminal, corresponding analog signal processing circuits such as filters, amplifiers and analog-to-digital converters need to be configured to pre-process, amplify and digitally convert the received analog signals for subsequent digital processing and analysis. The equipment cost is relatively low and has good real-time performance for the transmission of high-frequency signals, but the signal attenuation and distortion problems are more prominent.

[0070] In an exemplary embodiment, when the voltage signal is a digital signal, the physical quantity on the cluster outlet side collected by the measuring device is directly converted into a digital signal, and is efficiently and reliably transmitted using a digital communication protocol (RS-232, CAN (Controller Area Network) bus, Ethernet, etc.) to transmit it to the control terminal corresponding to the cluster. It has strong anti-interference ability, stable and reliable signal transmission, high data transmission rate, large amount of information, and is easy to encrypt, thereby improving data security.

[0071] In an exemplary embodiment, in consideration of the fact that high real-time performance is not required in the application scenario, the transmission scheme of the voltage information can be selected as a digital signal, and the widely used Ethernet transmission scheme can be selected. Efficient data transmission is achieved by building a local area network based on the TCP / IP (Transmission Control Protocol / Internet Protocol) protocol. Each node device has a built-in Ethernet interface, which encapsulates the collected data into IP data packets and broadcasts or transmits them point-to-point on the Ethernet through twisted pair, optical fiber and other media. The control terminal of each cluster acts as a server, monitors and receives data packets from each node, and performs parsing and processing. At the same time, the control terminal of each cluster can also encapsulate the control instructions into data packets and send them to the designated node through Ethernet to achieve remote control. This transmission method is characterized by high speed, reliability and flexibility, and provides a solid foundation for the intelligent control of the distribution network.

[0072] S200, detecting target voltage difference information of the distribution network according to difference information between the voltage information and the target voltage information.

[0073] Specifically, in the distributed control between distributed clusters, this application adopts the consistency principle, which is that multiple cluster control terminals in the distribution network interact and collaborate locally so that their states or decisions eventually converge or reach a common goal. This principle has a wide range of applications in the fields of distributed control, collaborative operations, group behavior simulation, etc.

[0074] In the process of using the consistency principle to generate the voltage control information of the target cluster, first, it is necessary to detect the target voltage difference information of the distribution network based on the difference information between the voltage information of other clusters and the target voltage information of the target cluster, so as to reduce the difference between the voltage information of the target cluster and the voltage information of other clusters based on the target voltage difference information of the distribution network, and gradually converge with other clusters or achieve a common goal.

[0075] S300 , generating voltage control information of a target cluster according to target voltage difference information and target voltage information.

[0076] Specifically, after the control terminal of the target cluster obtains the target voltage difference information of the distribution network, the voltage control information of the target cluster is generated according to the target voltage difference information and the target voltage information through the consistency principle. The voltage control information includes the target cluster voltage control information of the export side of the target cluster.

[0077] It should be noted that under the distributed control strategy, the voltage control information of the control terminals of each cluster will gradually converge in the process of finite-step iteration. At this time, the voltage control information is an estimated value. The convergence of voltage control information does not mean that the actual measured voltage values ​​of each cluster are strictly equal. In the power system, due to the influence of factors such as line impedance and load changes, the voltage values ​​at different locations will naturally be different. Through the distributed control strategy, each cluster can reach a consensus on the estimation of the system voltage state, that is, each cluster believes that the current operating voltage state is optimal. At this time, the entire system has achieved the global optimal or near-optimal state. At this time, the flow of active power flow is also reasonable and efficient, which not only meets the load demand but also reduces network losses. When a cluster is offline or a large load disturbance occurs, the distributed control method can respond quickly and restore its stable operation.

[0078] S400: Send voltage control information to an edge controller of a target cluster, wherein the edge controller is used to control an internal voltage of the target cluster according to the voltage control information.

[0079] Specifically, the voltage control information is accurately distributed to the edge controller inside the target cluster to achieve fine voltage regulation of the target cluster in the distribution network, wherein the control terminal of the target cluster realizes the aggregation and distribution of voltage control information.

[0080] Furthermore, when the edge controller receives the voltage control information sent by the control terminal of the target cluster, the current operating voltage information of multiple cluster sub-units and the initial voltage impact information at the previous moment are obtained. For each cluster sub-unit, the initial voltage impact information is corrected according to the voltage control information and the current operating voltage information to obtain the voltage impact information of the cluster sub-unit at the current moment. According to the voltage impact information of all cluster sub-units, the voltage of the target cluster is controlled. The detailed voltage control process is described in the following embodiment and will not be repeated here.

[0081] In the voltage control method of clusters in the above-mentioned distribution network, the control terminal of the target cluster among the multiple clusters of the distribution network detects the target voltage difference information of the distribution network through the difference information between the multiple voltage information of the clusters other than the target cluster and the target voltage information of the target cluster, and combines the target voltage difference information with the target voltage information of the target cluster itself to generate the voltage control information of the target cluster, which can be sent to the edge controller of the target cluster. The edge controller is used to control the internal voltage of the target cluster according to the voltage control information. During the whole process, there is no need to obtain the precise multiple different operating parameters in the distribution network in advance, nor is there any need to build a complex processing model. Instead, the voltage control information of the target cluster can be generated by relying on the difference information between the target voltage information of the target cluster and the voltage information of other clusters, and sent to the edge controller of the target cluster, which greatly simplifies the process of controlling the voltage of the target cluster in the distribution network, thereby improving the efficiency of the voltage control of the distribution network.

[0082] In an exemplary embodiment, detecting target voltage difference information of a power distribution network according to difference information between a plurality of voltage information and target voltage information includes:

[0083] Obtain voltage information of at least one cluster that is in communication connection with the target cluster from voltage information of clusters other than the target cluster; detect difference information between voltage information of at least one cluster that is in communication connection with the target cluster and target voltage information; and detect target voltage difference information of the distribution network based on at least one difference information.

[0084] Specifically, among the multiple distributed clusters of the power distribution network, the target cluster does not establish communication connection relationships with all other clusters. Therefore, the voltage information of other clusters that do not have a communication connection relationship with the target cluster does not affect the target cluster.

[0085] At least one cluster that is in communication connection with the target cluster is determined from clusters other than the target cluster, and voltage information of at least one cluster that is in communication connection with the target cluster is determined from voltage information of multiple clusters.

[0086] Difference information between voltage information of at least one cluster in communication connection with the target cluster and target voltage information is detected, and target voltage difference information of the power distribution network is detected based on the at least one difference information.

[0087] In an exemplary embodiment, detecting target voltage difference information of the distribution network according to at least one difference information includes: determining an integral value of a sum of all difference information as the target voltage difference information of the distribution network.

[0088] For example, let the target cluster be cluster i, and the other clusters except the target cluster be cluster j. The target voltage information of the target cluster is V i , the voltage information of other clusters except the target cluster is V j , N i is the set of all clusters, a ij is the communication matrix parameter, where the communication matrix parameter is whether cluster j has established a communication connection with cluster i. If a communication connection is established, then a ij =1, if the communication connection is not established, then a ij =0. At this time, the target voltage difference information is: .

[0089] In the above embodiment, by narrowing the range of all clusters to clusters that have communication connection with the target cluster, the target voltage difference information of the distribution network detected based on the difference information between the voltage information of the clusters that have communication connection with the target cluster and the target voltage information is more accurate.

[0090] In an exemplary embodiment, generating voltage control information of a target cluster according to target voltage difference information and target voltage information includes:

[0091] According to the target voltage difference information and the target voltage information, the global voltage prediction information of the distribution network is detected, and the rated voltage information of the distribution network is obtained; according to the global voltage prediction information and the rated voltage information, the voltage control information of the target cluster is generated.

[0092] Specifically, the target voltage difference information is obtained based on the difference information between multiple voltage information and the target voltage information. In fact, the target voltage difference information is the integral value of the sum of the difference information between multiple voltage information and the target voltage information. According to the target voltage difference information and the target voltage information, that is, according to the sum of the target voltage difference information and the target voltage information, the global voltage prediction information of the distribution network can be detected. At this time, the rated voltage information of the distribution network is obtained, and the voltage control information of the target cluster is generated based on the difference between the rated voltage information and the global voltage prediction information.

[0093] At this time, let the target cluster be cluster i, and the other clusters except the target cluster be cluster j. The target voltage information of the target cluster is V i , the voltage information of other clusters except the target cluster is V j , N i is the set of all clusters, a ij is the communication matrix parameter, where the communication matrix parameter is whether cluster j has established a communication connection with cluster i. If a communication connection is established, then a ij =1, if the communication connection is not established, then a ij =0, the target voltage difference information is: , then the target voltage difference information and the target voltage information are summed to obtain the global voltage prediction information of the distribution network , and obtain the rated voltage information of the distribution network , based on the difference between the rated voltage information and the global voltage prediction information, the voltage control information of the target cluster is generated .

[0094] in, It is the transfer function of the PI (Proportional-Integral) controller of the distributed control terminal. The PI controller consists of two control terms, proportional and integral. It calculates the control quantity by combining the current error (proportional term) and the accumulation of the error (integral term) to achieve regulation of the controlled object.

[0095] In this embodiment, the target voltage difference information and the target voltage information are used, such as the global voltage prediction information of the detection distribution network, to obtain the rated voltage information, so as to accurately generate the voltage control information of the target cluster.

[0096] In an exemplary embodiment, Figure 3 As shown, a voltage control method for a cluster in a distribution network is also provided, and the method is applied to Figure 1 Taking the edge controller 110 in the target cluster of the distribution network 102 as an example, the target cluster includes multiple cluster sub-units 108; wherein:

[0097] S500 , upon receiving voltage control information sent by a control terminal of a target cluster, obtaining current operating voltage information of a plurality of cluster sub-units and initial voltage impact information at a previous moment.

[0098] Among them, the voltage control information is generated after the control terminal of the target cluster collects the voltage information of the target cluster. The process of the control terminal of the target cluster generating the voltage control information includes: obtaining the target voltage information of the target cluster and the voltage information of the clusters other than the target cluster, detecting the target voltage difference information of the distribution network according to the difference information between the voltage information and the target voltage information, and generating the voltage control information of the target cluster according to the target voltage difference information and the target voltage information.

[0099] Specifically, the control terminal of the target cluster obtains the target voltage information of the target cluster and the voltage information of clusters other than the target cluster, generates voltage control information through a consistency algorithm, and sends the voltage control information to the edge controller of the target cluster. The edge controller controls the internal voltage of the target cluster through the voltage control information.

[0100] More specifically, the control terminal of the target cluster obtains the target voltage information of the target cluster and the voltage information of clusters other than the target cluster, detects the target voltage difference information of the distribution network based on the difference information between the voltage information and the target voltage information, and generates the voltage control information of the target cluster based on the target voltage difference information and the target voltage information. The specific voltage control information generation process is described in detail in the above embodiments and will not be repeated here.

[0101] Furthermore, in the present application, the edge controller controls the internal voltage of the target cluster through voltage control information, and the target cluster executes the voltage control information based on the recursive least squares method to control the internal voltage of the target cluster. That is to say, after the current cluster receives the voltage control information calculated by the upper distributed algorithm, it further executes the voltage control information based on the least squares method. The use of recursive calculation greatly speeds up the calculation process, and all calculations can be completed with only addition, subtraction, multiplication and division operations.

[0102] Therefore, in order to accurately execute voltage control information based on the least squares method, it is also necessary to obtain the initial voltage impact information of multiple cluster sub-units at the previous moment. In addition, it is also necessary to obtain the current operating voltage information of multiple cluster sub-units at the current moment, wherein the previous moment and the current moment are both control moments of the distribution network voltage control. In the control method within the cluster, the control moment interval is usually very short and is completed within tens of milliseconds; the initial voltage impact information refers to the information in the cluster sub-unit of the target cluster that can affect the voltage of the target cluster. For example, the initial voltage impact information can be reactive output information or droop voltage information.

[0103] S600 , for each cluster sub-unit, correct the initial voltage impact information according to the voltage control information and the current operating voltage information to obtain the voltage impact information of the cluster sub-unit at the current moment.

[0104] Specifically, by using the recursive least squares method, the voltage control information transmitted from the control terminal and the current operating voltage information of each cluster subunit are used to accurately correct the initial voltage impact information of the corresponding cluster subunit at the previous moment to obtain the voltage impact information at the current moment.

[0105] S700 , controlling the voltage of the target cluster according to the voltage impact information of all cluster sub-units.

[0106] Specifically, by correcting the initial voltage impact information of all cluster sub-units at the previous moment to the voltage impact information at the current moment, the voltage of the target cluster can be effectively controlled through the voltage impact information of all cluster sub-units to ensure that the voltage of the target cluster is stable within a reasonable range, thereby optimizing the operation of the distribution network power system. Among them, the voltage impact information of all cluster sub-units can be equivalent to being proportional to the voltage of the target cluster. The larger the voltage impact information of all cluster sub-units, the higher the voltage of the target cluster; conversely, the smaller the voltage impact information of all cluster sub-units, the lower the voltage of the target cluster.

[0107] In the voltage control method of the cluster in the above-mentioned distribution network, an edge controller inside the target cluster among the multiple clusters in the distribution network is applied, and the target cluster includes multiple cluster sub-units; the parameters involved in the whole process are very simple, mainly including the initial voltage impact information of the target cluster at the previous moment, the current operating voltage information of the multiple cluster sub-units, and the interaction of voltage control information between the edge controller inside the target cluster and the control terminal. There is no need to obtain the precise multiple different operating parameters in the distribution network in advance, nor is there a need to build a complex processing model. The initial voltage impact information can be corrected according to the voltage control information and the current operating voltage information of the cluster sub-unit to obtain the voltage impact information of the cluster sub-unit at the current moment, and the voltage of the multiple cluster sub-units in the target cluster can be controlled separately according to the voltage impact information of all cluster sub-units, which greatly simplifies the complexity of the voltage control process for the multiple cluster sub-units in the target cluster, thereby improving the efficiency of voltage control in the distribution network.

[0108] In an exemplary embodiment, the initial voltage impact information is corrected according to the voltage control information and the current operating voltage information, including:

[0109] The target cluster voltage information is obtained from the voltage control information; and the initial voltage impact information is corrected according to the voltage difference information between the target cluster voltage information and the current operating voltage information.

[0110] Specifically, the voltage control information is control information that carries the target cluster voltage information. Therefore, it is necessary to extract the target cluster voltage information from the voltage control information, and to detect the voltage difference information between the target cluster voltage information and the current operating voltage information, so as to correct the initial voltage impact information according to the voltage difference information and obtain the voltage impact information.

[0111] More specifically, the initial voltage impact information is corrected according to the voltage difference information by weighting the voltage difference information to obtain the voltage impact information variation, and then the initial voltage impact information is corrected according to the voltage impact information variation to obtain the voltage impact information. The initial voltage impact information is corrected according to the voltage impact information variation to obtain the voltage impact information, including: superimposing the initial voltage impact information and the voltage impact information variation to obtain the voltage impact information.

[0112] In the above embodiment, by detecting the voltage difference information between the target cluster voltage information and the current operating voltage information, the voltage impact information variation of the initial voltage impact information can be obtained according to the voltage difference information, so as to accurately correct the initial voltage impact information.

[0113] In an exemplary embodiment, the initial voltage impact information is modified according to the voltage difference information between the target cluster voltage information and the current operating voltage information, including:

[0114] Obtain the voltage difference information between the target cluster voltage information and the current operating voltage information, as well as the impact weight information of the voltage difference information; based on the initial voltage impact information and the current operating voltage information, correct the initial impact weight information to obtain the impact weight information at the current moment; according to the impact weight information, correct the voltage difference information to obtain the voltage impact information change; according to the voltage impact information change, correct the initial voltage impact information.

[0115] Specifically, the initial voltage influence information is corrected according to the voltage difference information by weighting the voltage difference information to obtain the voltage influence information variation, and then the initial voltage influence information is corrected according to the voltage influence information variation to obtain the voltage influence information.

[0116] The weighted processing of the voltage difference information is achieved through the influence weight information at the current moment, that is, the voltage difference information is weighted through the influence weight information at the current moment to obtain the voltage influence information change amount.

[0117] The influence weight information at the current moment is related to the initial influence weight information of the voltage difference information at the previous moment, which can be obtained by recursive means. Let the voltage influence information at the kth moment be Aj (k), the initial voltage impact information at the k-1th moment is , the current operating voltage of the cluster subunit at the kth moment is , is the initial influence weight information at the k-1th moment, then the influence weight information at the kth moment is The acquisition process can be specifically expressed as: .

[0118] It can be seen that, based on the initial voltage impact information and the current operating voltage information, the initial impact weight information is corrected to obtain the impact weight information at the current moment.

[0119] in, It can also be regarded as an influence weight information of the initial influence weight information, which is another intermediate variable. Its value can also be obtained by recursion. Its value is the same as the value of the previous moment. The specific forms are: .

[0120] Among them, u is a constant. Similarly, it is usually taken around 0~0.05. A value that is too large will lead to instability, while a value that is too small will cause the system to converge too slowly.

[0121] That is to say, The value of is not only the same as the previous moment It is also related to the initial voltage at the previous moment. related.

[0122] After determining the impact weight information at the current moment, it is necessary to correct the voltage difference information according to the impact weight information to obtain the voltage impact information change; according to the voltage impact information change, the initial voltage impact information Correction is made, and its voltage affects information A j (k) The specific manifestations can be characterized as: .

[0123] in, is the target cluster voltage information, is the current operating voltage information of the cluster subunit, is the voltage difference information, is the influence weight information at the kth moment, is the initial voltage impact information at the k-1th moment, is the voltage impact information change, is a constant, usually around 0~0.05. Too large a value will lead to instability, while too small a value will cause the system to converge too slowly. The value of needs to be coordinated with u. In addition, in practical applications, the initial values ​​of the variable parameters in the above expressions are all 0, for example, the intermediate variable information , initial impact weight information Information about the impact of initial voltage .

[0124] In the above embodiment, by acquiring the initial impact weight information of the previous moment, the initial impact weight information is corrected based on the initial voltage impact information and the current operating voltage information to obtain the impact weight information of the current moment. The voltage difference information can be accurately corrected based on the impact weight information, and then the initial voltage impact information can continue to be accurately corrected based on the change in the voltage impact information obtained after correction.

[0125] In an exemplary embodiment, when receiving voltage control information sent by a control terminal of a target cluster, obtaining initial voltage impact information of the target cluster at a previous moment further includes:

[0126] When the voltage control information sent by the control terminal of the target cluster is received, the cluster type of the target cluster is obtained; and according to the cluster type, the initial voltage influence information of the target cluster at the previous moment is obtained.

[0127] The cluster type of the target cluster includes an AC cluster and a DC cluster. When the cluster type is an AC cluster, the initial voltage impact information is reactive power output information; when the cluster type is a DC cluster, the initial voltage impact information is droop voltage information.

[0128] Specifically, when the voltage control information sent by the control terminal of the target cluster is received, the cluster type of the target cluster is obtained; according to the cluster type, the initial voltage impact information of the target cluster at the previous moment is obtained, which is divided into two cases:

[0129] When the cluster type is an AC cluster, the initial reactive output information of the cluster subunit at the previous moment is obtained, and the initial reactive output information is corrected according to the voltage control information and the current operating voltage information to obtain the reactive output information of the cluster subunit at the current moment, and then by adjusting the reactive output information of all cluster subunits, the voltage level of the current cluster is effectively controlled and adjusted. The larger the reactive output information of all cluster subunits, the higher the voltage level of the current cluster can be effectively controlled and adjusted.

[0130] When the cluster type is a DC cluster, the initial droop voltage information of the cluster subunit at the previous moment is obtained, and the initial droop voltage information is corrected according to the voltage control information and the current operating voltage information to obtain the droop voltage information of the cluster subunit at the current moment, and then by adjusting the droop voltage information of all cluster subunits, the voltage level of the current cluster is effectively controlled and adjusted. The larger the droop voltage in the droop voltage information of all cluster subunits, the higher the voltage level of the current cluster can be effectively controlled and adjusted.

[0131] In the above embodiment, by determining whether the cluster type of the target cluster is an AC cluster or a DC cluster according to the power supply characteristics in the current cluster, different voltage influence information in the cluster subunits can be controlled according to the cluster type of the target cluster to accurately control the voltage of the target cluster.

[0132] In an exemplary embodiment, under the framework of efficient inter-cluster coordination and precise regulation in a complex power system, when the inter-cluster communication mechanism is successfully established and the regulation instructions are smoothly issued, each cluster immediately starts the internal optimization and adjustment program, the core goal of which is to ensure the balance of supply and demand and stable operation at the system level by finely regulating the output characteristics of its internal distributed power sources. This process not only reflects the trend of intelligent and adaptive development of power systems, but is also a key measure to improve energy efficiency and enhance the resilience of the power grid.

[0133] For AC clusters, since reactive power has a direct impact on the voltage stability of the power system, precise adjustment of the reactive output of distributed power sources within the cluster becomes the core strategy for achieving effective voltage control. This adjustment process can be carried out without relying on detailed system model parameters, that is, using a model-free control method, which greatly reduces the complexity of control implementation and dependence on system information integrity. At the same time, avoiding oscillation during the adjustment process, that is, achieving smooth transition and precise control, is the key challenge and core advantage of this technology.

[0134] Similarly, in the DC sub-cluster, the regulation of the DC system voltage focuses on adjusting the droop control point of its internal distributed power source, and then adjusting the droop voltage information. As a commonly used distributed power control strategy, droop control is particularly critical in DC microgrids. It simulates the droop characteristics of traditional power sources to achieve automatic power distribution and voltage regulation. By dynamically adjusting the droop voltage information, it can flexibly respond to load changes or power output fluctuations to maintain the stability of the DC bus voltage. This regulation mechanism also emphasizes the simplicity and robustness of the control algorithm without relying on complex model parameters to adapt to the diversity and uncertainty that may exist within the DC cluster.

[0135] like Figure 4As shown, the cluster voltage curve after using the voltage control method of the cluster in the distribution network of the present application is shown. After the control method of the present application is enabled at 10s, the voltages of the AC cluster and the DC cluster are restored to the rated value. Figure 5 The system voltage curve after load disturbance is displayed. It can be seen that even after load disturbance, the voltage of each cluster can be restored to the rated value, ensuring its control effect.

[0136] In an exemplary embodiment, when a cluster encounters an abnormal situation such as a line failure or communication interruption on the line outlet side, its operating state will change significantly, specifically, the cluster will be forced to leave the original collaborative operation framework and then enter the island operation mode. In this mode, the cluster will automatically start the emergency response mechanism, and the primary task is to ensure the energy self-sufficiency and voltage stability within the cluster to achieve continuous power supply of key loads. At this time, the instructions from the upper-level distributed coordinated control system and the voltage adjustment strategy based on the recursive least squares method within the cluster will be temporarily shielded to avoid executing control actions that aggravate system instability under fault conditions. During the island operation, the cluster will rely on its built-in autonomous capabilities to optimize the matching of internal power generation and load, and the possible use of local voltage control strategies to maintain indicators such as voltage and frequency within an acceptable range, ensure the basic balance of power supply and demand within the cluster, and promptly cut off some non-important loads in an emergency. Among them, the specific local control method within the cluster can be to use a voltage source controlled diesel generator or energy storage system with voltage frequency or droop control to establish a qualified grid voltage and frequency, and then connect to distributed power sources such as photovoltaics and small energy storage batteries with current source control to balance energy.

[0137] When the fault is eliminated and the system conditions meet the requirements for reconnection to the grid, the cluster will first check the operation status to ensure that all equipment is operating normally and confirm that the voltage, frequency and other parameters of the grid meet the grid connection standards. Next, the cluster will use synchronization control to ensure that the phase, frequency and voltage amplitude of its output voltage are completely consistent with the main grid. Specifically, frequency synchronization is achieved by adjusting the overall speed of the cluster, voltage amplitude synchronization is completed by adjusting the voltage control loop, and phase synchronization ensures that the voltage phase of the cluster is aligned with the voltage phase of the main grid. After confirming that these parameters are consistent, the cluster export switch is gradually closed to connect the cluster to the main grid, while closely monitoring the grid parameters to ensure its stability. After the grid connection is successful, the system will experience a short stabilization period, usually from a few minutes to tens of minutes, to verify the effectiveness and stability of the grid connection operation. During this period, the operating status of the equipment, grid parameters and the working status of the protection device are continuously monitored to ensure that there are no abnormalities. Finally, the data such as the grid connection time and grid parameters are recorded, and a report is generated for subsequent analysis and optimization. This process ensures that the cluster can be safely and stably reconnected to the grid and maintain the long-term stable operation of the system.

[0138] In an exemplary embodiment, Figure 6 As shown, it is a structural block diagram of the voltage control of the cluster in the distribution network of the present application. The distribution network includes multiple clusters, such as cluster 1, cluster 2, cluster 3, ..., cluster N. The multiple clusters are connected through a common point. Each cluster has a corresponding upper-level control terminal. The multiple control terminals are distributedly controlled. The cluster includes multiple cluster sub-units, and the multiple cluster sub-units can be individual power supplies. The edge controller inside each cluster communicates with the control terminal corresponding to the cluster.

[0139] The upper-level distributed control terminal collects the voltage information on the export side of the corresponding cluster to generate the voltage control information of the corresponding cluster, and sends the voltage control information to the edge controller of each cluster. Each cluster calculates the voltage impact information of each cluster sub-unit through recursive estimation, and sends the voltage impact information of each cluster sub-unit to each power supply to control the voltage of the cluster.

[0140] Among them, voltage control is performed on the target cluster, specifically including:

[0141] S1. The control terminal of the target cluster obtains the target voltage information of the target cluster and the voltage information of clusters other than the target cluster; obtains the voltage information of at least one cluster that is in communication connection with the target cluster from the voltage information of clusters other than the target cluster; detects the difference information between the voltage information of at least one cluster that is in communication connection with the target cluster and the target voltage information; detects the target voltage difference information of the distribution network based on at least one difference information; detects the global voltage prediction information of the distribution network based on the target voltage difference information and the target voltage information, and obtains the rated voltage information of the distribution network; generates the voltage control information of the target cluster based on the global voltage prediction information and the rated voltage information; and sends the voltage control information to the edge controller of the target cluster.

[0142] S2. The edge controller of the target cluster, upon receiving the voltage control information sent by the control terminal of the target cluster, obtains the current operating voltage information of multiple cluster sub-units and the initial voltage impact information of the previous moment. The voltage control information is generated by the control terminal of the target cluster after collecting the voltage information of the target cluster; for each cluster sub-unit, the target cluster voltage information is extracted from the voltage control information; the voltage difference information between the target cluster voltage information and the current operating voltage information, and the initial impact weight information of the voltage difference information are obtained; based on the initial voltage impact information and the current operating voltage, the initial impact weight information is corrected to obtain the impact weight information at the current moment; according to the impact weight information, the voltage difference information is corrected to obtain the voltage impact information change; according to the voltage impact information change, the initial voltage impact information is corrected to obtain the voltage impact information of the cluster sub-unit at the current moment; according to the voltage impact information change, the voltage of the target cluster is controlled according to the voltage impact information of all cluster sub-units. Wherein, when the cluster type is an AC cluster, the initial voltage impact information is reactive output information; when the cluster type is a DC cluster, the initial voltage impact information is droop voltage information.

[0143] It can be seen from the above embodiments that, compared with the prior art, the advantages of the present application are:

[0144] (1) Apply the innovative method proposed in the embodiment of the present application to obtain the voltage information of multiple clusters of the hybrid distribution network, use the voltage information of multiple clusters to calculate the voltage control information of each cluster, and send the voltage control information to the corresponding AC or DC cluster. After the cluster receives the voltage control information, the recursive least squares method is used to calculate the voltage command value of each cluster sub-unit in the cluster according to the characteristics of the AC or DC distributed power supply, and finally realizes the data-driven model-free adaptive two-layer voltage control. The advanced two-layer data-driven model-free control architecture adopted in this application does not need to obtain the precise operating parameters of the distribution network in advance, breaking through the limitations of traditional control methods. The data-driven design enables the system to flexibly respond to various complex and changeable power grid environments, collect and analyze massive data in real time, and intelligently adjust the control strategy, so that the global voltage control can still be optimized without relying on accurate models. In this way, the efficiency and accuracy of voltage control are improved, and the dependence on power grid operation data is effectively reduced, providing a direction for the stable operation and efficient management of the power system.

[0145] (2) The communication parameters involved in the voltage control process of the present application are very simple, mainly including the interaction between voltage measurement data and voltage control instructions. This feature greatly simplifies the complexity of the communication system and reduces the demand for data transmission and processing. At the same time, since the application does not require high real-time control, there is no need to use a high-performance, high-cost controller. The use of low-cost controllers can meet the needs, making the technology more widely adaptable in practical applications. Whether it is the intelligent transformation of urban power grids or power management in remote areas, this technology can demonstrate outstanding performance, with good application scenarios and broad promotion prospects.

[0146] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0147] Based on the same inventive concept, the embodiment of the present application also provides a voltage control device for a cluster in a distribution network for implementing the voltage control method for a cluster in a distribution network involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of the voltage control device for a cluster in a distribution network provided below can refer to the limitations of the voltage control method for a cluster in a distribution network above, and will not be repeated here.

[0148] In an exemplary embodiment, Figure 7 As shown, a voltage control device for a cluster in a distribution network is provided, which is applied to a control terminal of a target cluster among multiple clusters in the distribution network; it includes: a first information acquisition module 100, a voltage difference detection module 200, a control information generation module 300 and a first voltage control module 400, wherein:

[0149] A first information acquisition module 100 is used to acquire target voltage information of a target cluster and voltage information of clusters other than the target cluster;

[0150] The voltage difference detection module 200 is used to detect target voltage difference information of the distribution network according to difference information between the voltage information and the target voltage information;

[0151] A control information generating module 300, configured to generate voltage control information of a target cluster according to the target voltage difference information and the target voltage information;

[0152] The first voltage control module 400 is used to send voltage control information to the edge controller of the target cluster, wherein the edge controller is used to control the internal voltage of the target cluster according to the voltage control information.

[0153] In one embodiment, the voltage difference detection module 200 is also used to obtain voltage information of at least one cluster that is communicatively connected to the target cluster from voltage information of clusters other than the target cluster; detect difference information between voltage information of at least one cluster that is communicatively connected to the target cluster and target voltage information; and detect target voltage difference information of the distribution network based on at least one difference information.

[0154] In one embodiment, the control information generation module 300 is also used to detect the global voltage prediction information of the distribution network and obtain the rated voltage information of the distribution network based on the target voltage difference information and the target voltage information; and generate the voltage control information of the target cluster based on the global voltage prediction information and the rated voltage information.

[0155] In an exemplary embodiment, Figure 8 As shown, a voltage control device for a cluster in a distribution network is provided, which is applied to an edge controller inside a target cluster among multiple clusters in the distribution network, and the target cluster includes multiple cluster sub-units; the device includes: a second information acquisition module 500, a voltage impact information correction module 600 and a second voltage control module 700, wherein:

[0156] The second information acquisition module 500 is used to obtain the current operating voltage information of multiple cluster sub-units and the initial voltage impact information at the previous moment when receiving the voltage control information sent by the control terminal of the target cluster. The voltage control information is generated after the control terminal of the target cluster collects the voltage information of the target cluster. The process of the control terminal of the target cluster generating the voltage control information includes: obtaining the target voltage information of the target cluster and the voltage information of the clusters other than the target cluster, detecting the target voltage difference information of the distribution network according to the difference information between the voltage information and the target voltage information, and generating the voltage control information of the target cluster according to the target voltage difference information and the target voltage information.

[0157] The voltage impact information correction module 600 is used to correct the initial voltage impact information of each cluster sub-unit according to the voltage control information and the current operating voltage information to obtain the voltage impact information of the cluster sub-unit at the current moment.

[0158] The second voltage control module 700 is used to control the voltage of the target cluster according to the voltage impact information of all cluster sub-units.

[0159] In one embodiment, the voltage impact information correction module 600 is further used to extract target cluster voltage information from the voltage control information; and correct the initial voltage impact information according to voltage difference information between the target cluster voltage information and the current operating voltage information.

[0160] In one embodiment, the voltage impact information correction module 600 is also used to obtain the voltage difference information between the target cluster voltage information and the current operating voltage information, and the initial impact weight information of the voltage difference information; based on the initial voltage impact information and the current operating voltage information, the initial impact weight information is corrected to obtain the impact weight information at the current moment; according to the impact weight information, the voltage difference information is corrected to obtain the voltage impact information change; according to the voltage impact information change, the initial voltage impact information is corrected.

[0161] In one embodiment, the second information acquisition module 500 is also used to obtain the initial voltage impact information of the target cluster at the previous moment according to the cluster type of the target cluster when the voltage control information sent by the control terminal of the target cluster is received, wherein when the cluster type is an AC cluster, the initial voltage impact information is reactive output information; when the cluster type is a DC cluster, the initial voltage impact information is droop voltage information.

[0162] Each module in the voltage control device of the cluster in the above distribution network can be implemented in whole or in part by software, hardware and a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0163] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Fig. 9As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data such as voltage information of multiple clusters. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a voltage control method for a cluster in a distribution network is implemented.

[0164] In an exemplary embodiment, a computer device is also provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Fig.10 As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, near field communication (NearFieldCommunication, NFC) or other technologies. When the computer program is executed by the processor, a voltage control method for a cluster in a distribution network is implemented. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0165] Those skilled in the art will understand that Fig.10The structure shown in the figure is a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0166] In one embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above method embodiments when executing the computer program.

[0167] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0168] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0169] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0170] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0171] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A voltage control method for a cluster in a distribution network, characterized in that: A control terminal applied to a target cluster among multiple clusters in a distribution network; the method comprises: Acquiring target voltage information of the target cluster and voltage information of clusters other than the target cluster; Detecting target voltage difference information of the power distribution network according to difference information between the voltage information and the target voltage information; generating voltage control information of the target cluster according to the target voltage difference information and the target voltage information; The voltage control information is sent to an edge controller of the target cluster, wherein the edge controller is used to control the internal voltage of the target cluster according to the voltage control information.

2. The method according to claim 1, characterized in that: The detecting target voltage difference information of the power distribution network according to the difference information between the voltage information and the target voltage information includes: Acquire voltage information of at least one cluster that is in communication connection with the target cluster from voltage information of clusters other than the target cluster; Detecting difference information between voltage information of at least one cluster that is in communication connection with the target cluster and the target voltage information; According to at least one of the difference information, target voltage difference information of the power distribution network is detected.

3. The method according to claim 1, characterized in that The generating the voltage control information of the target cluster according to the target voltage difference information and the target voltage information includes: Detecting global voltage prediction information of the distribution network according to the target voltage difference information and the target voltage information, and acquiring rated voltage information of the distribution network; The voltage control information of the target cluster is generated according to the global voltage prediction information and the rated voltage information.

4. A voltage control method for a cluster in a distribution network, characterized in that: An edge controller applied to a target cluster among multiple clusters in a distribution network, wherein the target cluster includes multiple cluster sub-units; the method includes: In the case of receiving the voltage control information sent by the control terminal of the target cluster, obtaining the current operating voltage information of the multiple cluster sub-units and the initial voltage impact information at the previous moment, wherein the voltage control information is generated after the control terminal of the target cluster collects the voltage information of the target cluster, and the process of the control terminal of the target cluster generating the voltage control information includes: obtaining the target voltage information of the target cluster and the voltage information of clusters other than the target cluster, detecting the target voltage difference information of the distribution network according to the difference information between the voltage information and the target voltage information, and generating the voltage control information of the target cluster according to the target voltage difference information and the target voltage information; For each of the cluster sub-units, the initial voltage impact information is modified according to the voltage control information and the current operating voltage information to obtain the voltage impact information of the cluster sub-unit at the current moment; The voltage of the target cluster is controlled according to the voltage influence information of all the cluster sub-units.

5. The method according to claim 4, characterized in that The correcting the initial voltage impact information according to the voltage control information and the current operating voltage information includes: extracting target cluster voltage information from the voltage control information; The initial voltage impact information is corrected according to voltage difference information between the target cluster voltage information and the current operating voltage information.

6. The method according to claim 5, characterized in that The correcting the initial voltage impact information according to the voltage difference information between the target cluster voltage information and the current operating voltage information includes: Acquire voltage difference information between the target cluster voltage information and the current operating voltage information, and initial impact weight information of the voltage difference information; Based on the initial voltage impact information and the current operating voltage information, the initial impact weight information is modified to obtain the impact weight information at the current moment; According to the influence weight information, the voltage difference information is corrected to obtain a change amount of the voltage influence information; The initial voltage impact information is modified according to the voltage impact information change amount.

7. The method according to claim 4, characterized in that The step of acquiring the initial voltage impact information of the target cluster at the previous moment upon receiving the voltage control information sent by the control terminal of the target cluster further includes: Upon receiving the voltage control information sent by the control terminal of the target cluster, acquiring the cluster type of the target cluster; According to the cluster type, initial voltage impact information of the target cluster at the previous moment is detected, wherein when the cluster type is an AC cluster, the initial voltage impact information is reactive output information; when the cluster type is a DC cluster, the initial voltage impact information is droop voltage information.

8. A voltage control device for a cluster in a distribution network, characterized in that: A control terminal for a target cluster among multiple clusters in a distribution network; the device comprises: A first information acquisition module, configured to acquire target voltage information of the target cluster and voltage information of clusters other than the target cluster; A voltage difference detection module, used for detecting target voltage difference information of the distribution network according to difference information between the voltage information and the target voltage information; A control information generating module, configured to generate voltage control information of the target cluster according to the target voltage difference information and the target voltage information; The first voltage control module is used to send the voltage control information to the edge controller of the target cluster, wherein the edge controller is used to control the internal voltage of the target cluster according to the voltage control information.

9. A voltage control device for a cluster in a distribution network, characterized in that: An edge controller applied to a target cluster among multiple clusters in a distribution network, wherein the target cluster includes multiple cluster sub-units; the device includes: The second information acquisition module is used to acquire the current operating voltage information of the multiple cluster sub-units and the initial voltage impact information at the previous moment when receiving the voltage control information sent by the control terminal of the target cluster, wherein the voltage control information is generated after the control terminal of the target cluster collects the voltage information of the target cluster, and the process of the control terminal of the target cluster generating the voltage control information includes: acquiring the target voltage information of the target cluster and the voltage information of clusters other than the target cluster, detecting the target voltage difference information of the distribution network according to the difference information between the voltage information and the target voltage information, and generating the voltage control information of the target cluster according to the target voltage difference information and the target voltage information; A voltage impact information correction module, configured to correct the initial voltage impact information for each cluster sub-unit according to the voltage control information and the current operating voltage information, so as to obtain the voltage impact information of the cluster sub-unit at the current moment; The second voltage control module is used to control the voltage of the target cluster according to the voltage influence information of all the cluster sub-units.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

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